Browser-like user-agent

[zhicwu]

Only works for http protocol. It seems ClickHouse discarded the user agent from gRPC client resulting empty http_user_agent in system.query_log.

User-Agent format:

<product name>/<product version> (<o/s name>/<o/s version>; <jvm name>/<jvm version>[; <additionalProperty>]; rv:<product revision>)

The change applies to Java Client, JDBC Driver and R2DBC driver and the difference is just the product name, first part of user-agent. Taking JDBC driver as an example:

Options	system.query_log.http_user_agent
(default)	ClickHouse-JdbcDriver/0.4.0-SNAPSHOT (Mac OS X/13.1; OpenJDK 64-Bit Server VM/Temurin-17+35; Apache-HttpClient/5.2.1; rv:f00a176)
http_connection_provider=HTTP_CLIENT	ClickHouse-JdbcDriver/0.4.0-SNAPSHOT (Mac OS X/13.1; OpenJDK 64-Bit Server VM/Temurin-17+35; HttpClient; rv:f00a176)
http_connection_provider=APACHE_HTTP_CLIENT	ClickHouse-JdbcDriver/0.4.0-SNAPSHOT (Mac OS X/13.1; OpenJDK 64-Bit Server VM/Temurin-17+35; Apache-HttpClient/5.2.1; rv:f00a176)

Closes #1177.